Hello Ondřej
On Tue, Oct 10, 2023 at 09:07:44AM +0200, Ondřej Jirman wrote:
> From: Ondrej Jirman <megi@xxxxxx>
>
> This makes the driver work with the new check in
> v4l2_async_register_subdev() that was introduced recently in 6.6-rc1.
> Without this change, probe fails with:
>
> ov8858 1-0036: Detected OV8858 sensor, revision 0xb2
> ov8858 1-0036: sub-device fwnode is an endpoint!
> ov8858 1-0036: v4l2 async register subdev failed
> ov8858: probe of 1-0036 failed with error -22
>
> This also simplifies the driver a bit.
>
> Signed-off-by: Ondrej Jirman <megi@xxxxxx>
Reviewed-by: Jacopo Mondi <jacopo.mondi@xxxxxxxxxxxxxxxx>
Thanks!
> ---
> v2:
> - call fwnode_handle_put earlier to avoid multiple calls to it in
> error code paths (suggested by Jacopo Mondi)
>
> drivers/media/i2c/ov8858.c | 10 ++--------
> 1 file changed, 2 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/media/i2c/ov8858.c b/drivers/media/i2c/ov8858.c
> index 3af6125a2eee..4d9fd76e2f60 100644
> --- a/drivers/media/i2c/ov8858.c
> +++ b/drivers/media/i2c/ov8858.c
> @@ -1850,9 +1850,9 @@ static int ov8858_parse_of(struct ov8858 *ov8858)
> }
>
> ret = v4l2_fwnode_endpoint_parse(endpoint, &vep);
> + fwnode_handle_put(endpoint);
> if (ret) {
> dev_err(dev, "Failed to parse endpoint: %d\n", ret);
> - fwnode_handle_put(endpoint);
> return ret;
> }
>
> @@ -1864,12 +1864,9 @@ static int ov8858_parse_of(struct ov8858 *ov8858)
> default:
> dev_err(dev, "Unsupported number of data lanes %u\n",
> ov8858->num_lanes);
> - fwnode_handle_put(endpoint);
> return -EINVAL;
> }
>
> - ov8858->subdev.fwnode = endpoint;
> -
> return 0;
> }
>
> @@ -1913,7 +1910,7 @@ static int ov8858_probe(struct i2c_client *client)
>
> ret = ov8858_init_ctrls(ov8858);
> if (ret)
> - goto err_put_fwnode;
> + return ret;
>
> sd = &ov8858->subdev;
> sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE | V4L2_SUBDEV_FL_HAS_EVENTS;
> @@ -1964,8 +1961,6 @@ static int ov8858_probe(struct i2c_client *client)
> media_entity_cleanup(&sd->entity);
> err_free_handler:
> v4l2_ctrl_handler_free(&ov8858->ctrl_handler);
> -err_put_fwnode:
> - fwnode_handle_put(ov8858->subdev.fwnode);
>
> return ret;
> }
> @@ -1978,7 +1973,6 @@ static void ov8858_remove(struct i2c_client *client)
> v4l2_async_unregister_subdev(sd);
> media_entity_cleanup(&sd->entity);
> v4l2_ctrl_handler_free(&ov8858->ctrl_handler);
> - fwnode_handle_put(ov8858->subdev.fwnode);
>
> pm_runtime_disable(&client->dev);
> if (!pm_runtime_status_suspended(&client->dev))
> --
> 2.42.0
>
